From 3cfa85d5e5bea7a82062879e31c536eeb1996ab1 Mon Sep 17 00:00:00 2001
From: John Mertz <john.mertz@mailcleaner.net>
Date: Tue, 1 Dec 2020 04:59:29 -0500
Subject: [PATCH] Script to look up and stream today's podcasts

---
 audio/stream-podcasts.pl | 83 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 83 insertions(+)
 create mode 100755 audio/stream-podcasts.pl

diff --git a/audio/stream-podcasts.pl b/audio/stream-podcasts.pl
new file mode 100755
index 0000000..1a32d90
--- /dev/null
+++ b/audio/stream-podcasts.pl
@@ -0,0 +1,83 @@
+#!/usr/bin/perl
+
+use strict;
+use warnings;
+
+# Dependencies
+use LWP::UserAgent; # Usually pre-installed, available on CPAN
+use XML::Hash::XS;  # CPAN or libxml-hash-xs-perl on Debian
+
+# Feeds that should be used if no arguments are provided
+my @default_feeds = (
+        # CBC FrontBurner
+        "https://www.cbc.ca/podcasting/includes/frontburner.xml",
+        # Majority Report AM Quickie
+        "https://feeds.fans.fm/5883fe04-e11e-4578-a018-3b93ddfb5723.xml"
+);
+
+# Player command (must accept stream as STDIN)
+#my $player = "| mpv -";
+# OMXPlayer is the only one capable of playing without stutter on the pi
+# It requires FIFO to stream. For a player that does support STDIN, uncomment
+# above and delete the following 4 lines
+unless (-e "/tmp/fifo.mp3") {
+	system("mkfifo /tmp/fifo.mp3");
+}
+my $player = "> /tmp/fifo.mp3 & omxplayer /tmp/fifo.mp3";
+
+# Multiple feeds can be given as CLI arguments instead
+my @feeds;
+if (scalar @ARGV) {
+        foreach (@ARGV) {
+                push @feeds, $_;
+        }
+}
+
+# Only use default feeds if no CLI feeds were given
+unless (scalar @feeds) {
+        @feeds = @default_feeds;
+}
+
+# Local function to get date pattern provided as 'pubDate'
+my $today = get_date();
+
+# Setup Webpage agent and XML parser
+my $ua = LWP::UserAgent->new();
+my $xml = XML::Hash::XS->new(utf8 => 0, encoding => 'utf-8');
+
+my @playlist;
+# Go through each feed
+foreach my $url (@feeds) {
+        # Ensure that it's actual an XML link
+        next unless $url =~ m#^https?://.*\.xml$#;
+        # Ensure it is fetched okay
+        my $raw = $ua->get("$url")->content() || next;
+        # Ensure it is parsed okay
+        my $xml_hash = $xml->xml2hash($raw) || next;
+
+        # Collect all episodes published today
+        foreach my $item (@{$xml_hash->{'channel'}->{'item'}}) {
+                if ($item->{'pubDate'} =~ m/$today/) {
+                        # Add any found to playlist
+                        push @playlist, $item->{'enclosure'}->{'url'};
+                }
+        }
+}
+
+# Fetch each item and pass it to player via STDIN
+foreach (@playlist) {
+        # Uncomment the following to print the media URL
+        print $_ . "\n";
+        system("curl -NL $_ $player");
+}
+unlink("/tmp/fifo.mp3");
+
+sub get_date
+{
+        my ($second, $minute, $hour, $day, $month, $year) = localtime(time);
+        my @months = (
+                'Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun',
+                'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'
+        );
+        return $day . ' ' . $months[$month] . ' ' . ($year+1900);
+}